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Development of an Iceberg Impact Load Assessment Tool

Authors
Paul Stuckey (C–CORE) | Yujian Huang (C–CORE) | Mark Fuglem (C–CORE)
DOI
https://doi.org/10.4043/29091-MS
Document ID
OTC-29091-MS
Publisher
Offshore Technology Conference
Source
OTC Arctic Technology Conference, 5-7 November, Houston, Texas, USA
Publication Date
2018
Document Type
Conference Paper
Language
English
ISBN
978-1-61399-621-8
Copyright
2018. Offshore Technology Conference
Keywords
iceberg management, threat assessment, decision making, iceberg actions
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0 in the last 30 days
69 since 2007
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Price: USD 12.00
Abstract

Icebergs can pose risks to platforms in arctic and subarctic regions. These risks require careful consideration during design, and as well during operations. Platforms must be designed to withstand potential impacts from icebergs, or to disconnect and move offsite to avoid impacts. ISO 19906 allows use of ice management to mitigate iceberg and sea-ice actions. In the case of icebergs, management may include detection, monitoring, towing, disconnection and evacuation. Threat assessment is also a critical input to the iceberg management decision-making process. For example, given one or more detected icebergs and available information on the iceberg and environment characteristics, what is the probability of exceeding platform design ice actions? Based on the threat assessment, better decisions can be made regarding which iceberg to manage, whether more information should be acquired, and whether shut-down or evacuation is needed.

This paper describes a new tool developed to estimate the distribution of iceberg impact actions from an encroaching iceberg given concurrent metocean conditions, conditional on impact. The tool can be used in a number of ways depending on the information available to the user. It can be used to assess the threat from a single iceberg or can be used to compare actions from multiple icebergs in the region, or for the same iceberg but with changing weather conditions. The iceberg load assessment tool is demonstrated for several example cases on the Grand Banks, showing the benefit of improved iceberg characterization obtained through rapid iceberg profiling.

File Size  1 MBNumber of Pages   12

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